Lock control fire hydrant

The utility model provides a lock control fire hydrant. The lock control fire hydrant comprises a fire hydrant body and a valve which is arranged on the fire hydrant body and used for controlling on-off of water flow, the valve comprises a base plate and a rotatable valve rod arranged in the middle of the base plate, a locking device is arranged in the valve, and the locking device comprises a first locking piece, a second locking piece, a driving piece and a reset piece. The first locking piece is fixedly arranged on the valve rod in a sleeving mode and fixedly connected with the valve rod, the second locking piece is arranged on the base plate in a hinged mode, and the reset piece makes contact with the second locking piece so that the second locking piece can be kept clamped with the first locking piece, rotation of the first locking piece can be limited, and the valve can be in a locked state. And the driving piece can drive the second locking piece to rotate until the second locking piece is separated fr